The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper shows an algorithm to control the DC bus voltage of a Shunt Active Power Filter (SAPF), based on the performance of the Proportional Integral (PI) controller. The power converter topology corresponds to a four-wire three-leg Voltage Source Inverter (VSI) with split capacitor. The algorithm is focused on the voltage control for each capacitor, such that the dc-voltages follow a reference...
The paper presents an efficient mathematical model to anticipate the effects of a transversal impedance installation in a bus of an electrical distribution network harmonic polluted, depending on the harmonic impedance seen in the respective section. There are two aspects of these effects: the amplification of the harmonic conditions in the bus, and the increase of the current on the respective impedance...
In this paper, effects of the recently found mix-mode (MM) conducted electromagnetic interference (EMI) noise emissions on the boost-type power factor corrected (PFC) pulse-width modulated (PWM) rectifier are first introduced. A practical PFC EMI filter design method with consideration of the MM emissions is given. The proposed method can be easily implemented in commercially-available EMI filter...
Taking 50 W fly-back single-stage PFC power supply as a example, this paper researched the technologies of synchronous rectification, transformer optimizing, clamp circuits and fast soft turning off technology in order to improve the power efficiency and reduce the power EMI. Experimental test results show the efficiency can reach above 90% in wide voltage range. With the addition of EMI filter, the...
This paper presents a novel pulse width switched modulated power filter compensator (MPFC) for the voltage stability enhancement, energy utilization, loss reduction, and power factor correction in a radial distribution network using the Particle Swarm Optimization (PSO) technique. The MPFC is controlled by a novel dynamic tri-loop error driven controller. The dynamic controller is regulated to minimize...
Power factor correction of the facilities requires a design that is able to compensate for reactive power demand as well as for harmonic currents injected by the equipment into power supply system. In the circumstances many of industrial supply systems consist of a combination of tuned filters and a capacitor bank. Investigation of interaction between capacitor banks and harmonic filters within an...
A space vector modulation (SVM) approach is proposed to control a four-switch rectifier with power factor correction and compensating the effect of capacitors voltage ripple. The theory and performance of this method are presented, and the method effectiveness is demonstrated by extensive simulations. The simulation results show that the capacitor voltage ripple effects in the output voltage and current...
The paper presents a novel device for energy conservation, power quality enhancement using switched power filter and compensator device for three phase motorized electric loads. The modulated power filter and compensator (MPFC) was developed by the first author to vary the shunt power filter equivalent admittance, modify the reactive power flow to the motorized electric load, improve electrical utilization...
Industrial plants are faced with stringent requirements enforced by the utility to meet power factor and power quality requirements. These plants, in order to avoid very costly penalties, have traditionally utilized switchable shunt capacitor banks with detuning reactors for power factor correction, along with a separate active harmonic filter in cases where harmonic currents are an issue as well...
In a single-phase switched reluctance motor (SRM) drive, the dc voltage source is generally supplied by a circuit consisting of a bridge rectifier and a filter capacitor connected to an ac line. The charging time of the capacitor is shorter from the ac source as capacity increases. The bridge rectifier draws pulsating current from the ac source, which results in a degraded power factor (PF) and lower...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.